CT-T301 is the hotest item in this system.
Feature:
- 3-key function: Call,Bill,Cancel
- 100% Waterproof with modern appearance
- Frequency: 433MHZ
- Steady & reliable performance,never lose the coding
- Battery type: DC12V23A Battery life:12months
- Transmission distance:300m in open area
- Size:∮60x17mm
- Low battery function(Optional)
- Various colors & OEM production available